Home / 15,405.58-21,256.59-9,742.06

Finding the Fourth Proportional to 15,405.58, 21,256.59 and 9,742.06

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Solution

The fourth proportional to 15,405.58, 21,256.59 and 9,742.06 is: 13,442.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.58 : 21,256.59 = 9,742.06 : x
  2. Step 2: Convert to fraction form
    15,405.58/21,256.59 = 9,742.06/x
  3. Step 3: Cross multiply
    15,405.58x = 21,256.59 × 9,742.06
  4. Step 4: Simplify right side
    15,405.58x = 207,082,975.18
  5. Step 5: Solve for x
    x = 207,082,975.18/15,405.58
  6. Step 6: Final answer
    x = 13,442.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.